public IFileDatabase Build(
IFileDatabase previousFileDatabase,
FileSystemTreeSnapshot newSnapshot,
FullPathChanges fullPathChanges,
Action<IFileDatabase> onIntermadiateResult)
{
using (var logger = new TimeElapsedLogger("Building file database from previous one and file system tree snapshot")) {
var fileDatabase = (FileDatabase)previousFileDatabase;
// Compute list of files from tree
ComputeFileCollection(newSnapshot);
var unchangedProjects = newSnapshot
.ProjectRoots.Where(x =>
fileDatabase.ProjectHashes.ContainsKey(x.Project.RootPath) &&
fileDatabase.ProjectHashes[x.Project.RootPath] == x.Project.VersionHash)
.Select(x => x.Project);
var unchangedProjectSet = new HashSet<IProject>(unchangedProjects,
// Use reference equality for IProject is safe, as we keep this
// dictionary only for the duration of this "Build" call.
new ReferenceEqualityComparer<IProject>());
// Don't use file memoization for now, as benefit is dubvious.
//IFileContentsMemoization fileContentsMemoization = new FileContentsMemoization();
IFileContentsMemoization fileContentsMemoization = new NullFileContentsMemoization();
var loadingInfo = new FileContentsLoadingInfo {
FileContentsMemoization = fileContentsMemoization,
FullPathChanges = fullPathChanges,
LoadedTextFileCount = 0,
OldFileDatabase = fileDatabase,
UnchangedProjects = unchangedProjectSet,
PartialProgressReporter = new PartialProgressReporter(
TimeSpan.FromSeconds(5.0),
() => {
Logger.LogInfo("Creating intermedidate file database");
var database = this.CreateFileDatabse();
onIntermadiateResult(database);
})
};
// Merge old state in new state and load all missing files
LoadFileContents(loadingInfo);
return CreateFileDatabse();
}
}
private void LoadFileContents(FileContentsLoadingInfo loadingInfo)
{
using (var logger = new TimeElapsedLogger("Loading file contents from disk")) {
using (var progress = _progressTrackerFactory.CreateTracker(_files.Count)) {
_files.AsParallel().ForAll(fileEntry => {
Debug.Assert(fileEntry.Value.FileData.Contents == null);
if (progress.Step()) {
progress.DisplayProgress((i, n) =>
string.Format("Reading file {0:n0} of {1:n0}: {2}", i, n, fileEntry.Value.FileName.FullPath));
}
var contents = LoadSingleFileContents(loadingInfo, fileEntry.Value);
if (contents != null) {
fileEntry.Value.FileData.UpdateContents(contents);
}
});
}
}
Logger.LogInfo("Loaded {0:n0} text files from disk, skipped {1:n0} binary files.",
loadingInfo.LoadedTextFileCount,
loadingInfo.LoadedBinaryFileCount);
}